Nokea
Which statement indicates that the patient needs further instruction about application of ice to a sprain?
- A. "I know this ice will reduce the swelling."
- B. "I will keep the ice on this knee for the rest of the day."
- C. "I will use the ice as you have directed for 24 hours."
- D. "I can elevate my leg and use ice to reduce swelling."
Correct Answer: B
Rationale: The correct answer is B because keeping ice on the knee for the rest of the day can lead to skin damage or frostbite. Choice A is correct as it acknowledges the purpose of ice in reducing swelling. Choice C shows understanding of using ice as directed. Choice D indicates proper understanding of combining elevation with ice for swelling reduction.
You may also like to solve these questions
The nurse is reinforcing teaching to a person being tested for HIV in a clinic. Which test should the nurse explain is done first in HIV testing?
- A. ELISA test
- B. Western blot test
- C. Viral load studies
- D. Rheumatoid factor test
Correct Answer: A
Rationale: The correct answer is A: ELISA test. The ELISA test is typically the initial screening test for HIV due to its high sensitivity in detecting HIV antibodies. It is cost-effective and quick. Western blot test is a confirmatory test used if ELISA is positive. Viral load studies monitor the progression of the disease but are not typically done first. Rheumatoid factor test is unrelated to HIV testing. Therefore, the ELISA test is the most appropriate initial step in HIV testing.
A segment of DNA that reads the same from forward and backward is called_____.
- A. Complementary DNA
- B. Palindromic DNA
- C. Copy DNA
- D. Transcribed DNA
Correct Answer: B
Rationale: The correct answer is B: Palindromic DNA. Palindromic DNA refers to a segment of DNA that reads the same from both directions. This property occurs when the nucleotide sequence on one strand of DNA is the reverse complement of the nucleotide sequence on the other strand. This symmetry allows the DNA sequence to be read the same forward and backward.
Incorrect choices:
A: Complementary DNA - Complementary DNA refers to a synthesized DNA strand that is complementary to a given DNA sequence.
C: Copy DNA - Copy DNA is not a commonly used term in molecular biology.
D: Transcribed DNA - Transcribed DNA refers to DNA that has been converted into RNA through the process of transcription, not DNA that reads the same forward and backward.
Which type of immunity is the result of contact with the antigen through infection and is the longest lasting type of immunity?
- A. Active innate immunity
- B. Passive innate immunity
- C. Active acquired immunity
- D. Passive acquired immunity
Correct Answer: C
Rationale: Active acquired immunity results from direct exposure to an antigen, such as through infection or vaccination. It involves the body's immune system recognizing and remembering the antigen, leading to long-lasting immunity.
Which T cell type helps activate B cells?
- A. Cytotoxic T cells
- B. Helper T cells
- C. Regulatory T cells
- D. Memory T cells
Correct Answer: B
Rationale: The correct answer is B: Helper T cells. Helper T cells play a crucial role in activating B cells by releasing cytokines that stimulate B cell proliferation and differentiation into plasma cells, which produce antibodies. Cytotoxic T cells (A) are involved in directly killing infected cells. Regulatory T cells (C) suppress immune responses. Memory T cells (D) are responsible for maintaining immunological memory for future responses. Thus, Helper T cells are the key cell type that helps activate B cells.
What is the central component of the complement system?
- A. C1
- B. C2
- C. C3
- D. C5
Correct Answer: C
Rationale: The correct answer is C: C3. C3 is the central component of the complement system as it plays a crucial role in both the classical and alternative pathways by forming the C3 convertase enzyme. This enzyme initiates the cascade of reactions leading to opsonization, chemotaxis, and cell lysis. Choices A, B, and D are incorrect as C1 is the initiator of the classical pathway, C2 is involved in the formation of the C3 convertase, and C5 is necessary for the formation of the membrane attack complex.